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Weights and Measurements

Dimensions (Approx.) : 3 1/4 x 5 3/8” (82.5 x 135.5mm)

Weight (Approx.) : 1 lbs 12 oz (800g)

Features

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Circular Aperture

When changing your aperture to defocus the background, the light sources appear blurred. This ‘bokeh’ effect of the blurred background can be enhanced with circular aperture blades used in this lens. Conventional aperture blades have flat sides creating unappealing polygonal shaped defocussed points of light. α lenses overcome this problem through a unique design that keeps the aperture almost perfectly circular from its wide-open setting to when it is closed by 2 stops. Smoother, more natural defocusing can be obtained as a result.

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ED (Extra-low Dispersion) glass

As focal lengths get longer, lenses built with conventional optical glass have difficulties with chromatic aberration, and as a result images suffer from lower contrast, lower color quality, and lower resolution. ED glass dramatically reduces chromatic aberration at telephoto ranges, and provides superior contrast across the entire image, even at large aperture settings. Super ED glass provides enhanced compensation for chromatic aberration.

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Focus hold button

Once you’ve adjusted focus to where you want it, pressing this button on the lens barrel will keep the lens locked to that focusing distance. The preview function can also be assigned to this button through the camera’s custom settings.

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Rear focusing elements

Only the rear groups of the optical system move to focus the lens, which allows for speedy AF operation and a shorter minimum focusing distance. Since the front of the lens does not rotate, operability is improved when shooting with a polarizing filter attached.

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SSM (Super Sonic wave Motor)

SSM is a piezoelectric motor that contributes to smooth and silent AF operation. The motor produces high torque at slow rotation, and provides immediate start and stop responses. It is also extremely quiet, which helps keep autofocusing silent. Lenses that feature SSM also include a position-sensitive detector to directly detect the amount of lens rotation, a factor that improves AF precision overall.

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Focus range limiter

This function allows you to set a limit on the focusing range which can save you time during AF operation as the lens will not ‘hunt’ through the entire focusing range. In macro lenses, this limit can be on either the near or far range (as pictured). In the SAL70200G, the limit is set on far ranges only. In the SAL300F28G, focusing can be limited either to a far range or to a range that you specify yourself.

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Distance encoder

The distance encoder plays an integral part in ADI flash metering, which delivers high precision flash metering that is unaffected by the reflectance of subjects or backgrounds. The distance encoder is a lens component that directly detects the position of the focusing mechanism, and sends a signal to the CPU in order to measure distance to the subject. During flash photography, this data is very useful in calculating how much flash output is appropriate to the scene.

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0.25x maximum magnification.

0.25x maximum magnification.

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In-Camera Image Stabilization.

Works with the SteadyShot® image stabilization built into Sony α DSLRs.

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Smooth Manual Focusing.

An easy-grip focus ring on the lens barrel gives you a solid "hands-on" feel in manual focusing.

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Multi-Element Design.

The SAL70300G incorporates 16 elements in 11 groups for high optical precision from the center of the image all the way to the corners.

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Circular Aperture.

Because the aperture blades form a near circle at the wide openings used for low-light shots, spot-light sources have a pleasing circular defocused effect. The lens features nine aperture blades.

Rated 5 out of 5 by Successful Very Useful Lens
Overall, I am very happy with this lens.
It produces very nice photos and fairs quite well even in direct sunlight. Its range allows for some portrait photos with very nice bokeh. The SSM makes it great for recording videos and is quick on the autofocus. The 70-300G is a very solid lens with great build quality and feels amazing in the hand!
The one complaint I have is that it's a little slow for lowlight situations. If it were at least one stop lower (say, f3.5-4.6), it would make this lens absolutely perfect! I chose this lens over the 70-200G series lense due to the fact that it's much more portable and covers a very large focal range.
Overall, if you need a good zoom lens in this focal range, this is it. Optically, it is much better than it's non-G counterpart (75-300mm), so if you want the better image quality, overall performance and you have some extra cash to spare, I definitely recommend this lens; it won't disappoint.
May 12, 2012

Rated 5 out of 5 by CnaRay "G"... What a lens!
Test shots attached shows the 70mm shot.at 1/320 of a sec, F9, ISO 100 and 300mm shot F9, ISO 200, at 1/500 of a sec. Hand held and Steady shoot turned on. Both test shots were minimally Photoshoped using CS-5.5. I was happily surprised by the sharpness, clarity, and contrast. I also ran test on the lens wide open and was also happy with the results
I previously used the 18-200 lens from Sony, but no more. G lenses from Sony are far Superior.
May 8, 2012

Rated 5 out of 5 by deltadave44 AWESOME
just broke the seal on this baby and it's just as advertised...couldn't be happier...first shot out of the box is here..
June 4, 2012

Rated 5 out of 5 by Sehrawy BRILLIANT BRILLIANT BRILLIANT !!!!!!!!
I really really love this lens. I have had it for quite some time now and I am still a bit stunned at how sharp it is. And with BEAUTIFUL BEAUTIFUL colors !! Thanks to the SSM motor, Auto focusing is really quick and scarily silent and very accurate. The only time I feel bad when dealing with this lens is when I have to take it off of my camera. I love its size and weight too. It feels right and your fingers just fall perfectly where they're supposed to. Using it is very comfortable and lots of fun. I'm really impressed by this thing. Bravo Sony !! I could really just blab on forever but I'm sure you guys get the point lol !! I actually really like the way it looks too. it looks like it can travel through time !! it has character and charisma !! I like that !! I highly recommend this lens to all Sony Alpha users !! I have also used the normal cheaper 75-300 and the difference is HUGE !! I know that the G is more expensive but honestly it is so much more than worth it.
May 16, 2010

Rated 5 out of 5 by Oldmanriver Clearly superior telephoto sports pictures
Coupled to my SONY A700, this telephoto lens yields near professional quality images on the full-size soccer field where I maintain a photo website for a youth team. The entry-level G lens has truly awesome tracking capabilities for players in motion. I often compare my posted images with those from other local teams whose photographers use Nikon "all in one" telephoto kit lenses (and other lesser brands), all limited by their inherent optical compromises. (I also own a SAL-1680Z lens for the shorter focal length range.) Their sports pictures rarely achieve the razor sharp clarity of my dedicated higher focal length range SONY G lens. The difference is quite stunning. My satisfaction with this trusty "tool" is through the roof. At the end of the day, carrying more than one lens tends to be a prerequisite for image excellence.
December 1, 2008

Rated 5 out of 5 by ajpcanuck outstanding
Best ever lens EVER. Love love LOVE this new lens. Detail is extraordinary - even with birds in flight (see photo). This is now my go-to lens for my hobby photography. Thanks Sony for such an outstanding product! Makes ANYBODY look good as a photographer!
July 30, 2015

Rated 5 out of 5 great lens!
I have only owed Minolta products.
I've never owned a digital camera before. I purchased a Sony a-700 to replace my Dynaxx 7000 since Kodachrome 200 is off the market.
I bought this Sony lens based on previous reviews to replace my old, inexpensive, half plastic, Minolta A/F 75-300 lens.
What a difference! Soft, photo studio pictures (any light, any situation), have been replaced by sharp, exquisite frames.
Worth every penny!
July 8, 2009

Rated 5 out of 5 by SLUF1354 Not generally a Zoom fan, but WOW
I added this lens to my kit mainly for sports events, and what a surprise I was in for! At first glance, the size of this lens is somewhat daunting. But, once mounted on the A700 (with V-grip), poof! Excellent balance and handling! This has remained true since moving over to the A900 (also with V-grip). The results at water polo tournies has become quite the subject among other parents and fans. I am very well pleased!
May 3, 2009